Around 1,050 UK service personnel have been deployed to run the UK-led military programme, which will see Ukrainian soldiers being trained by British forces at MoD sites across the North West, South West and South East of the country.
The first cohort met with Defence Secretary Ben Wallace on Thursday at the Manchester base.
Mr Wallace said: “This ambitious new training programme is the next phase in the UK’s support to the Armed Forces of Ukraine in their fight against Russian aggression.
“Using the world-class expertise of the British Army we will help Ukraine to rebuild its forces and scale up its resistance as they defend their country’s sovereignty and their right to choose their own future.”
The training will give volunteer recruits with little to no military experience the skills to be effective in frontline combat.
Based on the UK’s basic soldier training, the course covers weapons handling, battlefield first aid, fieldcraft, patrol tactics and the Law of Armed Conflict.
The Government has also procured AK variant assault rifles for the training scheme, meaning Ukrainian troops can train on the weapons they will be using on the frontline.
This was supported by the Welsh Guards, who tested more than 2,400 such rifles in 17 days to ensure they were ready for the Ukrainians to begin their training.